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  \node [xslant=0.2, scale = 3, anchor = north west,inner xsep = 0pt, font=\CJKfontspec{汉仪大宋简}](author) at ([shift={(0.1\paperwidth,0.35\paperheight)}]current page.west) {  Vasile Pop \& Ovidiu Furdui
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  \draw(0.15,0.15)circle(0.1);}}   著};
  
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  \node [scale = 2, anchor = north west,inner xsep = 0pt, font=\CJKfontspec{方正楷体_GBK}] at ([shift={(0.1\paperwidth,0.19\paperheight)}]current page.west) {理论，应用与问题};

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